# Autofill with extensions
For convenience Psono's extensions offers the possibility to autofill password forms. This will explain how the mechanism works.
# How does autofill with extensions work?
Make sure that you installed the browser extension and that you are logged in. Afterwards the process looks like this:
When you Edit an entry and open the "advanced" options (Link at the bottom right), you will see something similar to this:
So when the entry was created you specified an URL (second field from the top, e.g. https://example.com/users/sign_in).
The extension automatically "extracted" a domain for the so called "domain filter" (fourth field from the bottom, e.g. example.com).
You can manually modify this urlfilter and also add multiple other domains, separated by a space.
- Whenever you visit now a page, that has a password form, Psono will list all entries with matching urlfilters.
- Click on the entry and Psono will automatically fill out the username and password.